Add SLE-Micro-Rancher Dockerfile for buildservice automation

Signed-off-by: Klaus Kämpf <kkaempf@suse.de>

.obs/dockerfile/slem4r-os/Dockerfile

@@ -0,0 +1,97 @@
+# SPDX-License-Identifier: Apache-2.0
+# Define the names/tags of the container
+#!BuildTag: suse/sle-micro-rancher/%%SLEMICRO_VERSION%%:latest
+#!BuildTag: suse/sle-micro-rancher/%%SLEMICRO_VERSION%%:%RELEASE%
+#!BuildConstraint: hardware:disk:size unit=G 8
+#
+
+FROM suse/sle15:15.5 as host
+
+MAINTAINER SUSE LLC (https://www.suse.com/)
+
+# Define labels according to https://en.opensuse.org/Building_derived_containers
+# labelprefix=com.suse.sle.micro.rancher
+LABEL org.opencontainers.image.title="SLE Micro for Rancher"
+LABEL org.opencontainers.image.description="Image containing SLE Micro for Rancher - a containerized OS layer for Kubernetes."
+LABEL org.opencontainers.image.version="%%SLEMICRO_VERSION%%.%RELEASE%"
+LABEL org.opencontainers.image.url="https://www.suse.com/products/micro/"
+LABEL org.opencontainers.image.created="%BUILDTIME%"
+LABEL org.opencontainers.image.vendor="SUSE LLC"
+LABEL org.opencontainers.image.source="%SOURCEURL%"
+LABEL org.opensuse.reference="registry.suse.com/suse/sle-micro-rancher/%%SLEMICRO_VERSION%%:%RELEASE%"
+LABEL org.openbuildservice.disturl="%DISTURL%"
+LABEL com.suse.supportlevel="alpha"
+LABEL com.suse.eula="sle-eula"
+LABEL com.suse.lifecycle-url="https://www.suse.com/lifecycle#suse-linux-enterprise-micro"
+LABEL com.suse.image-type="sle-micro"
+LABEL com.suse.release-stage="unreleased"
+# endlabelprefix
+
+RUN mkdir /osimage
+
+RUN rpm --initdb --root /osimage
+
+RUN zypper --installroot /osimage in --no-recommends -y filesystem
+
+# make system bootable
+RUN zypper --installroot /osimage in --no-recommends -y grub2 shim dracut kernel kernel-firmware-all systemd bash
+
+#!ArchExclusiveLine: x86_64
+RUN if [ `uname -m` = "x86-64" ]; then zypper --installroot /osimage in --no-recommends -y syslinux; fi
+
+# make dracut happy
+RUN zypper --installroot /osimage in --no-recommends -y squashfs NetworkManager device-mapper iproute2 tar curl ca-certificates ca-certificates-mozilla
+
+# make ARM happy
+#!ArchExclusiveLine: aarch64
+RUN if [ `uname -m` = "aarch64" ]; then zypper --installroot /osimage in -y raspberrypi-firmware raspberrypi-firmware-config raspberrypi-firmware-dt u-boot-rpiarm64 grub2-arm64-efi; fi
+
+# make SUSE happy
+RUN zypper --installroot /osimage in --no-recommends -y SLE-Micro-Rancher-release systemd-presets-branding-SLE-Micro-for-Rancher
+
+# make elemental-register happy
+RUN zypper --installroot /osimage in --no-recommends -y dmidecode lvm2
+
+# make Rancher (containerd) happy
+RUN zypper --installroot /osimage in --no-recommends -y apparmor-parser
+
+# add elemental
+RUN zypper --installroot /osimage in --no-recommends -y elemental
+
+# make users happy
+RUN zypper --installroot /osimage in --no-recommends -y procps openssl openssh vim-small less iputils kernel-firmware-all NetworkManager-wwan cryptsetup podman zypper
+
+FROM scratch as osimage
+
+COPY --from=host /osimage /
+
+ARG SLEMICRO_VERSION
+ARG BUILD_REPO=%%IMG_REPO%%
+ARG IMAGE_REPO=$BUILD_REPO/rancher/elemental-teal/$SLEMICRO_VERSION
+ARG IMAGE_TAG=%VERSION%-%RELEASE%
+
+# IMPORTANT: Setup elemental-release used for versioning/upgrade. The
+# values here should reflect the tag of the image being built
+# Also used by elemental-populate-labels
+RUN echo IMAGE_REPO=\"${IMAGE_REPO}\"         >> /etc/os-release && \
+    echo IMAGE_TAG=\"${IMAGE_TAG}\"           >> /etc/os-release && \
+    echo IMAGE=\"${IMAGE_REPO}:${IMAGE_TAG}\" >> /etc/os-release && \
+    echo TIMESTAMP="`date +'%Y%m%d%H%M%S'`" >> /etc/os-release
+RUN echo GRUB_ENTRY_NAME=\"Elemental\" >> /etc/os-release
+
+# Ensure /tmp is mounted as tmpfs by default
+RUN if [ -e /usr/share/systemd/tmp.mount ]; then \
+      cp /usr/share/systemd/tmp.mount /etc/systemd/system; \
+    fi
+
+# Save some space
+RUN zypper clean --all && \
+    rm -rf /var/log/update* && \
+    >/var/log/lastlog && \
+    rm -rf /boot/vmlinux*
+
+# Rebuild initrd to setup dracut with the boot configurations
+RUN dracut -f --regenerate-all && \
+    # aarch64 has an uncompressed kernel so we need to link it to vmlinuz
+    kernel=$(ls /boot/Image-* | head -n1) && \
+    if [ -e "$kernel" ]; then ln -sf "${kernel#/boot/}" /boot/vmlinuz; fi